factorise 2 minus 5 x square
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2 - 5x²
= (√2)² - (√5 x)²
[a²-b² = (a+b) (a-b)]
= (√2+√5 x ) ( √2-√5 x )
= (√2)² - (√5 x)²
[a²-b² = (a+b) (a-b)]
= (√2+√5 x ) ( √2-√5 x )
Answered by
2
(2-5)^2=2^2+(-5)^2-2 (2.-5)
4-25+20
-21+20
-1
4-25+20
-21+20
-1
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